Waste agricultural film plastic pyrolyzing furnace
By introducing a stirring assembly and scraper cleaning system driven by the drive motor into the plastic pyrolysis furnace, the problems of low heating efficiency and residue residue are solved, and a more efficient and uniform pyrolysis process and rapid cleaning of equipment are achieved.
Patent Information
- Application Number
- CN202420762098.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-15
AI Technical Summary
The existing plastic pyrolysis furnaces are inefficient and uneven when heating plastics, and the residue remaining in the inner wall of the pyrolysis furnace after pyrolysis affects the next use.
A waste agricultural film plastic pyrolysis furnace was designed, and the agitation component was used to drive the agitation component for stirring. The scraper was used to clean the residue in the inner wall of the pyrolysis furnace, and automatic discharge was achieved through the closed component.
It improves the efficiency and uniformity of plastic heating, quickly cleans up residues, and ensures continuous use and efficient operation of the equipment.
Smart Images
Figure CN222427941U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of plastic recycling and processing, in particular to a pyrolysis furnace for waste agricultural film plastics. Background Art
[0002] In order to ensure that crops grow in a good temperature and humidity environment during agricultural production, it is necessary to lay agricultural film above the crops. With the increasing use of agricultural film, and because agricultural film cannot be reused, the amount of waste agricultural film generated has also increased. When processing waste agricultural film, most of the material is plastic. If the waste agricultural film is landfilled or incinerated at will, it will cause soil and air pollution. Therefore, it is necessary to recycle and reuse the waste agricultural film. When recycling plastic agricultural film, it will be pyrolyzed in a pyrolysis furnace to achieve the purpose of reuse. However, the existing plastic pyrolysis furnace usually directly heats the plastic in the furnace, which not only has a slow heating efficiency, but also has the problem of uneven heating of the plastic. After the pyrolysis furnace has processed the plastic products, some residue will remain on the inner wall of the pyrolysis furnace. If it is not cleaned, it will affect the next use. Therefore, a waste agricultural film plastic pyrolysis furnace is needed to solve the problems of uneven heating in the existing pyrolysis furnace and residual residue on the inner wall of the pyrolysis furnace after pyrolysis. Utility Model Content
[0003] The purpose of the utility model is to provide a pyrolysis furnace for waste agricultural film plastics. The device can improve the heating efficiency when pyrolyzing plastics, ensure uniform heating of the waste agricultural film, and quickly clean the residue remaining on the inner wall of the pyrolysis furnace after use. It has the advantages of simple structure and high practicality.
[0004] The purpose of the utility model is to provide a pyrolysis furnace for waste agricultural film plastics, comprising a pyrolysis furnace body, a feed pipe fixedly connected to one side of the top of the pyrolysis furnace body, a cover plate rotatably provided on the feed pipe, a discharge pipe fixedly connected to the bottom of the pyrolysis furnace body, a closing assembly fixedly installed on the inner wall of the discharge pipe, a drive motor fixedly installed on the top of the pyrolysis furnace body, the drive motor is fixedly connected to a stirring assembly arranged in the pyrolysis furnace body, more than one scraper is fixedly provided around the stirring assembly, and an air outlet pipe is opened near the top on one side of the pyrolysis furnace body.
[0005] Furthermore, the stirring assembly includes a stirring rod and stirring blades. The top of the stirring rod passes through the shell of the pyrolysis furnace body and is fixedly connected to the output end of the drive motor. There are multiple stirring blades, which are evenly distributed and fixed around the stirring rod. The scraper is fixed around the stirring rod.
[0006] Furthermore, the closing component includes two semicircular plates, both of which are rotatably set on the inner wall of the discharge pipe. An electric telescopic rod is rotatably set on the bottom of the semicircular plate, and the bottom end of the electric telescopic rod is rotatably connected to the inner wall of the discharge pipe.
[0007] Furthermore, a rotating shaft is rotatably provided at the bottom of the cover plate, and the cover plate is rotatably provided at the feed port of the feed pipe through the rotating shaft. A sealing ring is fixedly installed at the bottom of the cover plate, and the size of the sealing ring is consistent with the size of the feed pipe.
[0008] Furthermore, a negative pressure fan is fixedly installed on the air outlet pipe.
[0009] Furthermore, a sealing strip is fixedly mounted on the straight end of the semicircular plate.
[0010] The working principle and usage principle of the utility model are as follows: the device feeds waste agricultural film plastic into the pyrolysis furnace body through the feeding pipe, the cover plate and the sealing ring can improve the sealing effect of the pyrolysis furnace body, the driving motor drives the stirring assembly to stir, so that the plastic is heated evenly during the pyrolysis process, and the scraper rotates in the pyrolysis furnace body along with the stirring assembly. The plastic residues adhering to the inner wall of the pyrolysis furnace body during the pyrolysis process are scraped off by the contact and fit between the scraper and the inside of the pyrolysis furnace. The combination of the air outlet and the negative pressure fan facilitates the discharge of the exhaust gas generated by the pyrolysis of the waste agricultural film. The closing assembly extends the two semicircular plates together through the electric telescopic rod to achieve sealing of the bottom of the device. After the pyrolysis furnace body is completed, the electric telescopic rod is controlled to be retracted, so that the two semicircular plates rotate downward to create a gap, and the waste agricultural film that has been pyrolyzed is discharged through the gap.
[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the device utilizes a driving motor to drive a stirring assembly to stir the waste agricultural film plastic during pyrolysis of the waste agricultural film, so that the plastic agricultural film is heated evenly during the pyrolysis process, thereby improving the efficiency of pyrolysis; the scraper facilitates scraping off the plastic agricultural film residue on the inner wall of the pyrolysis furnace body to avoid affecting the efficiency and quality of the next pyrolysis; the closing assembly facilitates automatic discharge of the pyrolyzed plastic agricultural film, thereby improving practicality; the sealing ring and sealing strip improve the sealing of the device; and the exhaust pipe can effectively discharge the exhaust gas generated during pyrolysis. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;
[0013] Figure 2 This is a schematic diagram of the overall internal structure of an embodiment of the present utility model;
[0014] Figure 3 This is a schematic diagram of the cover structure of an embodiment of the utility model;
[0015] Figure 4 This is a schematic diagram of the structure of the closing assembly of an embodiment of the utility model;
[0016] Figure 5 This is a schematic diagram of the semicircular plate structure of an embodiment of the present utility model.
[0017] Explanation of the accompanying reference numerals: 1. Pyrolysis furnace body; 2. Feed pipe; 21. Cover plate; 22. Rotating shaft; 23. Sealing ring; 3. Discharge pipe; 4. Driving motor; 5. Exhaust pipe; 51. Negative pressure fan; 6. Stirring assembly; 61. Stirring rod; 62. Stirring blade; 7. Scraper; 8. Closing assembly; 81. Semicircular plate; 811. Sealing strip; 82. Electric telescopic rod. DETAILED DESCRIPTION
[0018] according to Figure 1 and Figure 3 As shown: A pyrolysis furnace for waste agricultural film plastics, comprising a pyrolysis furnace body 1, a feed pipe 2 is fixedly connected to one side of the top of the pyrolysis furnace body 1, a cover plate 21 is rotatably provided on the feed pipe 2, a discharge pipe 3 is fixedly connected to the bottom of the pyrolysis furnace body 1, a closing component 8 is fixedly installed on the inner wall of the discharge pipe 3, a drive motor 4 is fixedly installed on the top of the pyrolysis furnace body 1, the drive motor 4 is fixedly connected to the stirring component 6 arranged in the pyrolysis furnace body 1, and more than one scraper 7 is fixedly provided around the stirring component 6, an air outlet pipe 5 is opened on one side of the pyrolysis furnace body 1 near the top; a rotating shaft 22 is rotatably provided at the bottom of the cover plate 21, and the cover plate 21 is rotatably provided at the feed port of the feed pipe 2 through the rotating shaft 22, a sealing ring 23 is fixedly installed on the bottom of the cover plate 21, and the size of the sealing ring 23 is consistent with that of the feed pipe 2.
[0019] During specific implementation, the pyrolysis furnace body 1 can be installed by arranging brackets around it. The pyrolysis furnace body 1 is hollow, the feed pipe 2 is connected to the pyrolysis furnace body 1, and the cover plate 21 is rotatably arranged on the top of the discharge pipe 3 through the rotating shaft 22. The discharge pipe 3 is sealed by the sealing ring 23 at the bottom of the cover plate 21. The output end of the drive motor 4 passes through the pyrolysis furnace body 1 and is fixedly connected to the stirring component 6 arranged in the pyrolysis furnace body 1. The stirring component 6 is driven by the drive motor 4 to rotate to achieve stirring of the waste agricultural film plastic products in the pyrolysis furnace body 1, thereby effectively improving the pyrolysis efficiency. The scraper 7 can be set to an L-shape, one end of the L-shaped scraper 7 is fixedly connected to the stirring component 6, and the other end of the L-shaped scraper 7 is in contact with the inner wall of the pyrolysis furnace body 1. When the drive motor 4 drives the stirring component 6 to rotate, it drives the scraper 7 to rotate at the same time to achieve the purpose of cleaning the residue remaining on the inner wall of the pyrolysis furnace body 1.
[0020] according to Figure 2 As shown: the stirring assembly 6 includes a stirring rod 61 and a stirring blade 62. The top of the stirring rod 61 passes through the shell of the pyrolysis furnace body 1 and is fixedly connected to the output end of the drive motor 4. There are multiple stirring blades 62, which are evenly distributed and fixed around the stirring rod 61. The scraper 7 is fixed around the stirring rod 61; a negative pressure fan 51 is fixedly installed on the outlet pipe 5.
[0021] During specific implementation, the stirring rod 61 is fixedly connected to the output pipe of the drive motor 4, and the stirring blades 62 can be set to four groups. The number of stirring blades 62 in each group can be set to four or six according to actual usage. Each group of stirring blades 62 is fixed around the stirring rod 61. One end of the outlet pipe 5 is connected to the pyrolysis furnace body 1, and the other end can be connected to the exhaust gas treatment device. A negative pressure fan 51 is installed on the outlet pipe 5. By starting the negative pressure fan 51, the exhaust gas in the pyrolysis process in the pyrolysis furnace body 1 is discharged into the exhaust gas treatment device through the outlet pipe 5.
[0022] according to Figure 2 、 Figure 4 and Figure 5 As shown: the closing component 8 includes a semicircular plate 81, which is provided in two pieces. Both semicircular plates 81 are rotatably provided on the inner wall of the discharge pipe 3. An electric telescopic rod 82 is rotatably provided at the bottom of each semicircular plate 81, and the bottom end of the electric telescopic rod 82 is rotatably connected to the inner wall of the discharge pipe 3; a sealing strip 811 is fixedly installed at the straight end of the semicircular plate 81.
[0023] During specific implementation, the two semicircular plates 81 are arranged in a V-shaped rotation on the inner wall of the discharge pipe 3, and sealing strips 811 are fixedly installed on the contact surfaces of the two semicircular plates 81. The sealing strips 811 are used to improve the sealing effect of the discharge pipe 3 to avoid leakage of raw materials during the pyrolysis process. The opening and closing of the two semicircular plates 81 are automatically controlled by the electric telescopic rod 82.
Claims
1. A waste agricultural film plastic pyrolysis furnace, comprising a pyrolysis furnace body (1), characterized in that: A feed pipe (2) is fixedly connected to one side of the top of the pyrolysis furnace body (1), a cover plate (21) is rotatably arranged on the feed pipe (2), a discharge pipe (3) is fixedly connected to the bottom of the pyrolysis furnace body (1), a closing component (8) is fixedly installed on the inner wall of the discharge pipe (3), a drive motor (4) is fixedly installed on the top of the pyrolysis furnace body (1), the drive motor (4) is fixedly connected to a stirring component (6) arranged in the pyrolysis furnace body (1), and more than one scraper (7) is fixedly arranged on the four sides of the stirring component (6), and an air outlet pipe (5) is opened on one side of the pyrolysis furnace body (1) near the top.
2. According to claim 1, a waste agricultural film plastic pyrolysis furnace is characterized by: The stirring assembly (6) comprises a stirring rod (61) and stirring blades (62); the top of the stirring rod (61) passes through the shell of the pyrolysis furnace body (1) and is fixedly connected to the output end of the driving motor (4); a plurality of stirring blades (62) are provided, and the stirring blades (62) are evenly distributed and fixedly arranged around the stirring rod (61); and the scraper (7) is fixedly arranged around the stirring rod (61).
3. A waste agricultural film plastic pyrolysis furnace according to claim 1 or 2, characterized in that: The closing assembly (8) comprises a semicircular plate (81), wherein two semicircular plates (81) are provided, and both semicircular plates (81) are rotatably provided on the inner wall of the discharge pipe (3), and an electric telescopic rod (82) is rotatably provided at the bottom of each semicircular plate (81), and the bottom end of the electric telescopic rod (82) is rotatably connected to the inner wall of the discharge pipe (3).
4. A waste agricultural film plastic pyrolysis furnace according to claim 1 or 2, characterized in that: A rotating shaft (22) is rotatably arranged at the bottom of the cover plate (21), and the cover plate (21) is rotatably arranged at the feed inlet of the feed pipe (2) via the rotating shaft (22). A sealing ring (23) is fixedly installed at the bottom of the cover plate (21), and the size of the sealing ring (23) is consistent with that of the feed pipe (2).
5. The waste agricultural film plastic pyrolysis furnace according to claim 3, characterized in that: A rotating shaft (22) is rotatably arranged at the bottom of the cover plate (21), and the cover plate (21) is rotatably arranged at the feed inlet of the feed pipe (2) via the rotating shaft (22). A sealing ring (23) is fixedly installed at the bottom of the cover plate (21), and the size of the sealing ring (23) is consistent with that of the feed pipe (2).
6. A waste agricultural film plastic pyrolysis furnace according to claim 1, 2 or 5, characterized in that: A negative pressure fan (51) is fixedly mounted on the air outlet pipe (5).
7. The waste agricultural film plastic pyrolysis furnace according to claim 3, characterized in that: A negative pressure fan (51) is fixedly mounted on the air outlet pipe (5).
8. The waste agricultural film plastic pyrolysis furnace according to claim 4, characterized in that: A negative pressure fan (51) is fixedly mounted on the air outlet pipe (5).
9. The waste agricultural film plastic pyrolysis furnace according to claim 3, characterized in that: A sealing strip (811) is fixedly mounted on the straight end of the semicircular plate (81).
10. A waste agricultural film plastic pyrolysis furnace according to claim 5 or 7, characterized in that: A sealing strip (811) is fixedly mounted on the straight end of the semicircular plate (81).